Firefox for iOS
Download on the App Store.
This branch (main)
This branch works with Xcode 14.3.0, Swift 5.8 and supports iOS 14 and above.
Please note: Both Intel and M1 macs are supported
Please make sure you aim your pull requests in the right direction.
For bug fixes and features for a specific release, use the version branch.
We encourage you to participate in this open source project. We love Pull Requests, Issue Reports, Feature Requests or any kind of positive contribution. Please read the Mozilla Community Participation Guidelines and our Firefox for iOS contributing guidelines first.
- Chat: See #fx-ios for general discussion, or open a Github discussion.
- Issues: File a new issue • Existing bugs
Want to contribute on the codebase but don't know where to start? Here is a list of issues that are contributor friendly.
Building the code
- Install the latest Xcode developer tools from Apple.
- Install, Brew, Node, and a Python3 virtualenv for localization scripts:
brew update brew install node pip3 install virtualenv
- Clone the repository:
git clone https://github.com/mozilla-mobile/firefox-ios
- Install Node.js dependencies, build user scripts and update content blocker:
cd firefox-ios sh ./bootstrap.sh
- Make sure to select the
Fennecscheme in Xcode.
- Select the destination device you want to build on.
- Run the app with
Cmd + Ror by pressing the
build and runbutton.
- Xcode -> File -> Packages -> Reset Package Caches
Building User Scripts
WKWebView) are compiled, concatenated, and minified using webpack. User Scripts to be aggregated are placed in the following directories:
/Client |-- /Frontend |-- /UserContent |-- /UserScripts |-- /AllFrames | |-- /AtDocumentEnd | |-- /AtDocumentStart |-- /MainFrame |-- /AtDocumentEnd |-- /AtDocumentStart
This reduces the total possible number of User Scripts down to four. The compiled output from concatenating and minifying the User Scripts placed in these folders resides in
/Client/Assets and are named accordingly:
To simplify the build process, these compiled files are checked-in to this repository. When adding or editing User Scripts, these files can be re-compiled with
webpack manually. This requires Node.js to be installed, and all required
npm packages can be installed by running
npm install in the project's root directory. User Scripts can be compiled by running the following
npm command in the root directory of the project:
npm run build
This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/